radio1.cpp: In function `int main()': radio1.cpp:44: warning: comparison between signed and unsigned integer expressions radio1.cpp:54: ISO C++ forbids declaration of `it' with no type radio1.cpp:54: parse error before `:' token radio1.cpp:59: parse error before `;' token radio1.cpp:54: warning: unused variable `int it' radio1.cpp:42: warning: unused variable `int val'